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A sanding disk with rotational inertia 7.0 x 10^-3 kg·m^2 is attached to an electric drill whose motor delivers a torque of magnitude 19 N·m about the central axis of the disk. About that axis and with torque applied for 53 ms, what is the magnitude of the (a) angular momentum and (b) angular velocity of the disk?
A series RCL circuit includes a resistance of 254, an inductive reactance of 865, and a capacitive reactance of 427. What is the voltage of the generator
A spaceship travels at a constant speed from earth to a planet orbiting another star. When the spacecraft arrives, How far away is the planet according to observers on earth
A water slide launches a child horizontally above a swimming pool. How far from the launch point does the child land in the water
a sample of nitrogen of mass 3.12g at 23.0 degree celsuis is allowed to expand reversibly and adiabatically from 400cm^3 to 2.00dm^3. what is the work done by the gas
a racing dog is initially running at 10.0 m/s, but is slowing down. By what fraction has its kinetic energy been reduced when its speed has been reduced by half
During a certain period of time, the angular position of a swinging door is described by ? = 5.03 + 9.8t + 1.90t2, Determine the angular position, angular speed, and angular acceleration
A 0.15-kg apple falls off a tree branch that is 2.8m above the grass. The apple sinks 0.066m into the grass while stopping
An archer puts a 0.34 kg arrow to the bowstring. An average force of 209 N is exerted to draw the string back 1.3 m. Unless otherwise directed, assume that air resistance is negligible. plan energy bar graphs to solve the problem.
What are the speed and period of a person on a carousel if the person has a centripetal acceleration with a magnitude of 1.0 m/s2 when she is standing 3.0 m from the axis
a red car and a green car move toward each other in adjacent lanes and parallel to an x axis. At time t = 0, the red car is at xr = 0 and the green car is at xg = 211 m.
Estimate how many times planet has orbited its star
An object has a charge of -4.3 ?C. How many electrons must be removed so that the charge becomes +2.8 C?
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